/Engine/Source/Developer/DerivedDataCache/Public/DerivedDataCacheInterface.h
Returns whether the data associated with each key is likely to exist in the cache. Even if this function returns true, a get for one of the keys may still fail!
A bit array with bits indicating whether the data for the corresponding key will probably be found
[TBitArray](API\Runtime\Core\Containers\TBitArray) CachedDataProbablyExistsBatch ( TConstArrayView< [FString](API\Runtime\Core\Containers\FString) > CacheKeys )